Oil burner



W Delancey,

R m N E V lqh m ii m u m f// r m B |1|| Il y|l-.fl.. ll .i I L: In h. II l I I I ll: 1 I HHHHC May 12, 1942.

ATTORNEY Patented May 12, 1942 2,282,989 OIL BURNER Ralph W. De Lancey,Meriden, Conn, assignor to The Miller Company, Meriden, Conn., acorporation of Connecticut Application December 23, 1939, Serial No.310,745 4 Claims. (of. 158-94) The present invention relates to oilburners, and is more particularly directed toward an improved airdiffuser for use with wick type oil burners.

As ordinarily constructed the air diffusers for oil burners employperforated sheet metal stampings adjacent the wick to direct air towardthe inner surface of the wick adjacent its upper end.

The present invention contemplates a form of air distributor whichemploys a coil of wire supported in such a way as to receive apredetermined portion of the air from underneath and diffuse anddistribute this air so that it is passed out toward the wick in a finelyand evenly diffused manner throughout its entire periphery.

The accompanying drawing shows, for purposes of illustrating the presentinvention, one of the many embodiments in which the invention may takeform, it being understood that the drawing is illustrative of theinvention rather than limiting the same.

In the drawing:

Figure 1 is a vertical sectional view through a burner embodying thepresent invention;

Figure 2 is a sectional view taken on the line 2--2 of Figure l; and

Figure 3 is a fragmentary vertical sectional view through a modifiedform of construction.

For purposes of illustrating the present invention it is shown as beingembodied in a burner of the type employing a blast of air underpressure. It, however, is suitable for use in burners of the'type inwhich draft is produced by the chimney.

In Figures 1 and 2 the wick is indicated at Ill and the wick tube at lI, I la. The wick tube is received in an outer cylinder I2 which carriesa constricting cylinder l3 which extends up to the region of the upperedge of the outer wick tube Ila. A fixed axially disposed tube l4supports a vertically movable plunger or rod i5 which carries a flamespreader I6 and a cylinder ll, this cylinder dividing the space insidethe wick tube into two channels through which the blast of air coming upinside the wick tube passes.

A spider member l8 supported from the usual flange [3 in the tube l I isapertured as indicated so that the air can pass up through it and supports a channel shaped ring 20 which may be made of steel or insulatingmaterial of a nature to withstand the heat. The channel shaped membercarries an air diffuser 2| in the form of a coil of wire. This wire ispreferably some form of heat resisting wire which will withstand thetemperatures adjacent the wick and retain its form. It extends all theway around inside the wick or may be interrupted as indicated in myapplication Serial No. 310,746, filed concurrently herewith toaccommodate an electric igniting coil.

The channel shaped member has openings 22 in the bottom to permit apredetermined portion of the air passing up outside the cylinder H toenter into the diffuser coil 2|. This air passes between the windings ofthe coil and is distributed and diffused about so as to provide anextremely uniform, well difiused stream of air which passes out throughthe coil and toward the wick. The channel 20 which supports the diffusercoil may be readily removed after the flame spreader has been lifted.

As shown in Figure 3 the channel 29' is provided-with two rows of holes22'. In all cases the size and distribution of the holes and the size ofthewire and the closeness of the coil are such as to produce the mostefficient combustion. These sizes are determined experimentally.

It is obvious that the invention may be embodied in many forms andconstructions within the scope of the claims and I wish it to beunderstood that the particular form shown is but one of the many forms.Various modifications and changes being possible, I do not otherwiselimit myself in any way with respect thereto.

What is claimed is:

1. In an oil burner, a wick tube, a wick, and an air diffuser includinga coil of wire disposed inside the wick tube adjacent the wick, andhaving air passages adjacent the coil.

2. In an oil burner, a wick tube, a wick, an air diffuser including acoil of wire disposed inside the wick tube adjacent the wick, and achannel shaped receiver for the coil of wire, thereceiver beingapertured to admit air below the coil.

3. An oil burner comprising a Wick tube, a wick, a flame spreader abovethe wick, a tubular imperforate support for the spreader adapted to forman annular air passage betweenit andthe wick tube, an upwardly openingchannel shaped member adjacent the top of the wick to constrict saidpassage and having openings in the bottom thereof, and a coiled airdiffuser in the channel shaped member.

4. An oil burner comprising a wick tube, a wick, an upwardly removableflame spreader, an upwardly removable ring below the top of the wick,and inside the wick tube, and an air diffuser in the form of a coil ofwire secured to the ring, the ring having air passages adjacent thecoil. 7

RALPH W. DE LANCEY.

